Goo Gear Snorkel

Explore the delicate, breathtaking ecosystem beneath the goo for several tenths of a second before the corrosive, toxic ecosystem beneath the goo destroys you in Portal 2.

— Prize Booth description

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The Goo Gear Snorkel are blue and orange diving masks with snorkels for Atlas and P-Body respectively. Atlas's is more of a square than P-body's, while P-body's is an oval. They could be earned by participating in the Steam Summer Camp sale between June 30th and July 10th, 2011 and cost 3 tickets at the Prize Booth.